dialogimpl.cpp

在LINUX平台下

#include "dialogimpl.h"
//
DialogImpl::DialogImpl( QWidget * parent, Qt::WFlags f) 
	: QDialog(parent, f)
{
	setupUi(this); 
	connect(Connect,SIGNAL(clicked()),this,SLOT(connectToServer()));
	connect(SendButton,SIGNAL(clicked()),this,SLOT(sendData()));
	connect(QuitButton,SIGNAL(clicked()),this,SLOT(close()));
	connect(&client, SIGNAL(error(QAbstractSocket::SocketError)),
            this, SLOT(displayError(QAbstractSocket::SocketError)));

}
void DialogImpl::sendData()
{
	const char *data="0";
	 QString  data1= SendText->text();
    QByteArray ba = data1.toLatin1();
    data = ba.data();
	client.write(data);
	Connect->setEnabled(true);
	
}
void DialogImpl::connectToServer()
{
	
	client.connectToHost(QHostAddress::LocalHost,16689);
   Connect->setEnabled(false);
	
}
void DialogImpl::displayError(QAbstractSocket::SocketError socketError)
{
    if (socketError == QTcpSocket::RemoteHostClosedError)
        return;

    QMessageBox::information(this, tr("network"),
                             tr("can't link")
                             .arg(client.errorString()));

    client.close();
      Connect->setEnabled(true);
 
    QApplication::restoreOverrideCursor();
}
//